Bluetooth accessories sometimes require a minimum Bluetooth specification (version) in order to work with full functionality.
To see which Bluetooth version is on your PC
- In the search box on the taskbar, type device manager, then select it from the results.
- Select the arrow next to Bluetooth to expand it.
- Select the Bluetooth radio listing (yours might simply be listed as a wireless device).
- Select the Advanced tab, then look for the LMP (Link Manager Protocol) listing in the Firmware or Firmware version area. That number tells you what LMP version you have on your device.
Find your version number on the table below to map your LMP version to its Bluetooth Core Specification number. That's the highest core specification your device fully supports. Accessories with higher specifications may still work, but with reduced functionality.
|Link Manager Protocol Version (LMP)||Bluetooth Core Specification|
|LMP 0||Bluetooth Core Specification 1.0b (withdrawn)|
|LMP 1||Bluetooth Core Specification 1.1 (withdrawn)|
|LMP 2||Bluetooth Core Specification 1.2 (withdrawn)|
|LMP 3||Bluetooth Core Specification 2.0 + EDR|
|LMP 4||Bluetooth Core Specification 2.1 + EDR|
|LMP 5||Bluetooth Core Specification 3.0 + HS|
|LMP 6||Bluetooth Core Specification 4.0|
|LMP 7||Bluetooth Core Specification 4.1|
|LMP 8||Bluetooth Core Specification 4.2|
|LMP 9||Bluetooth Core Specification 5.0|
|LMP 10||Bluetooth Core Specification 5.1|